Baffling: a condition-dependent alternative mate attraction strategy using self-made tools in tree crickets.

Area of Science:

• Behavioral Ecology
• Animal Communication
• Evolutionary Biology

Background:

• Sexual selection drives the evolution of alternative reproductive strategies.
• Male tree crickets use acoustic signals for mate attraction and choice.
• Condition-dependent strategies can arise under intense sexual selection.

Purpose of the Study:

• To investigate baffling as a condition-dependent reproductive strategy in tree crickets.
• To determine if baffling provides mating benefits to less preferred males.
• To understand how baffling influences mating success and sperm transfer.

Main Methods:

• Observational study of male tree cricket acoustic signaling.
• Analysis of baffling behavior in relation to male characteristics (size, call amplitude).
• Assessment of mating success and duration associated with baffling.

Main Results:

• Baffling, an acoustic call amplification strategy using tools, is condition-dependent.
• Less preferred males (smaller, lower-amplitude callers) predominantly use baffling.
• Baffling increases call amplitude, advertisement range, and female attraction.
• Females mate for longer durations with males that baffle.
• Sperm transfer benefits of baffling are primarily observed in less preferred males.

Conclusions:

• Baffling is a condition-dependent alternative reproductive strategy in male tree crickets.
• This strategy allows less preferred males to overcome disadvantages and achieve mating benefits.
• Baffling contributes to the maintenance of polymorphism in male calling strategies within the population.